Cell c doesn't care for their clients

Bad coverage - poor service called on the 18 January to complain about service reception, cell c sent me my mms/internet settings again, called another 2 times and no action from their side i have a reffernace number *** after phoning on the 2nd of February again and still no acrion after i baught a 6gb data bundle and still cannot use! Terrible reception and lack of service